 Along with neurologist Hermann Oppenheim, the "Ziehen-Oppenheim syndrome" is named, a condition defined as genetic torsion dystonia (spasms) due to a lesion of the basal ganglia.As an anatomist, Ziehen published a series of extensive descriptions of the human spinal cord, medulla oblongata, pons and cerebellum in Karl von Bardeleben's handbook of human anatomy ("Handbuch der Anatomie des Menschen").These contributions, which, to set the level of detail within them into perspective, amounted to approximately 700 pages on the cerebellum alone, appeared between 1899 and 1934 and were collected in two tomes published in 1903 and 1934, respectively, by the Gustav Fischer Verlag in Jena.